From patchwork Tue Nov 18 14:03:39 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yerden Zhumabekov X-Patchwork-Id: 1332 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 8B55B7F9C; Tue, 18 Nov 2014 14:52:51 +0100 (CET) Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id 7A87C7F41 for ; Tue, 18 Nov 2014 14:52:49 +0100 (CET) Received: from mgw.gov.kz (mx.ctsat.kz [178.89.4.95]) by mgw.gov.kz with ESMTP id sAIE38T8014316-sAIE38TA014316 (version=TLSv1.0 cipher=AES128-SHA bits=128 verify=NO); Tue, 18 Nov 2014 20:03:08 +0600 Received: from EXCASHUB2.rgp.local (192.168.40.53) by EdgeForefront.rgp.local (192.168.40.59) with Microsoft SMTP Server (TLS) id 14.2.247.3; Tue, 18 Nov 2014 20:02:57 +0600 Received: from r220.rgp.local (192.168.59.10) by excashub2.rgp.local (192.168.40.48) with Microsoft SMTP Server (TLS) id 14.2.247.3; Tue, 18 Nov 2014 20:03:19 +0600 From: Yerden Zhumabekov To: Date: Tue, 18 Nov 2014 20:03:39 +0600 Message-ID: <1e51cc071c1c206dbebf1e714aa80fc37afcf9f4.1416318389.git.e_zhumabekov@sts.kz> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> MIME-Version: 1.0 X-Originating-IP: [192.168.59.10] X-FEAS-SYSTEM-WL: e_zhumabekov@sts.kz Subject: [dpdk-dev] [PATCH v4 2/5] hash: add new rte_hash_crc_8byte call X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" SSE4.2 provides _mm_crc32_u64 intrinsic with 8-byte operand. Signed-off-by: Yerden Zhumabekov --- lib/librte_hash/rte_hash_crc.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/librte_hash/rte_hash_crc.h b/lib/librte_hash/rte_hash_crc.h index 4d7532a..15f687a 100644 --- a/lib/librte_hash/rte_hash_crc.h +++ b/lib/librte_hash/rte_hash_crc.h @@ -380,6 +380,22 @@ rte_hash_crc_4byte(uint32_t data, uint32_t init_val) } /** + * Use single crc32 instruction to perform a hash on a 8 byte value. + * + * @param data + * Data to perform hash on. + * @param init_val + * Value to initialise hash generator. + * @return + * 32bit calculated hash value. + */ +static inline uint32_t +rte_hash_crc_8byte(uint64_t data, uint32_t init_val) +{ + return _mm_crc32_u64(init_val, data); +} + +/** * Use crc32 instruction to perform a hash. * * @param data